The TROY M507/M528 MICR Toner Secure High Yield Cartridge guarantees printer reliability and provides a level of quality to meet or exceed the highest printing standards. Our unique and rigorous manufacturing and testing process results in a toner that is precision-matched for each unit, helping to maintain optimum performance of your laser printer. This toner is specifically designed for the TROY M507 and TROY M528 printers. Our MICR toner cartridges are made to meet the print characteristics of each printer model, and they consistently meet or exceed the yield of OEM cartridges, providing customers with a lower operating cost for their check printing operations. To increase safety, our TROY MICR Toner Secure forces a bright red stain to permeate through the document if chemical alteration is attempted. Our patented solution is the first laser toner, which will help to protect the ink of the words and graphics being printed. Each of these printer cartridges yields 10,000 printed pages. HP only supports MICR products in LaserJet Printers that have been modified to the TROY specification. TROY products are fully supported by HP Service and will not void the HP manufacturer’s warranty.